Multicolor attachment for vertical printing presses



y 1941- P. w. BURGAN 2,243,619

1 MULTICOLOR ATTACHMENT FOR VERTICAL PRINTING PRESSES Filed Aug 1, 1940. 2 Sheets-Sheet. 1

Paid M/Bzzzym.

INVENTOR BY W186:

ATTORNEYS May 27, 1941. w BURGAN 2,243,619

MULTIGOLOR ATTACHMENT FOR VERTICAL PRINTING PRESSES Filed Aug. 1, 1940 2 SheetsSheet 2 J5 1/ i8 47 i4 v 15 ATTORNEYS Patented May 27, 1941 MULTICOLOR ATTACHMENT FOR VERTICAL PRINTING PRE'SSES Paul W. Burgan, Chicago, Ill.

Application August 1, 1940, Serial No. 349,135

2 Claims.

This invention relates to a multicolor attachment for a vertical printing press of the type disclosed in Patent No. 1,567,177, entitled Printing press, issued December 29, 1925, to Edward Cheshire and assigned to the Miehle Printing Press and Manufacturing Company of Chicago, Illinois, a corporation of Illinois.

An object of the invention is to provide an attachment which will run a second-color at the same time a form or letter is being run.

A further object is to provide apparatus of this type which will be formed of a few strong, simple and durable parts, which will be inexpensive to manufacture, and which will not easily get out of order.

With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings forming a part of this specification:

Figure 1 is a side elevation of a multicolor attachment constructed in accordance with the invention in applied position on a vertical printing press of the type above identified.

Figure 2 is a cross sectional view taken on the line 2-2 of Figure 3 showing the multicolor cylinder and ink supply rollers and inking roller.

Figure 3 is a top plan view of the attachment.

Figure 4 is a longitudinal sectional view of the attachment taken on the line 44 of Figure 2.

Referring now to the drawings in which like characters of reference designate similar parts in the various views, the above-identified vertical press includes an impression cylinder H] which is mounted for rotary and vertical reciprocatory movement on' the printing press ll through the medium of a cylinder frame l2 which latter includes, as best shown in Figure 2, a lower cross bar [3. This type of printing press also includes a cylinder band tube [4 carried by the cylinder frame and located below and spaced from the impression cylinder Ill. The lower cross bar and the cylinder band tube are utilized, in the present embodiment of the invention, for mounting the multicolor attachment on the press.

The multicolor attachment comprises a pair of arcuate bracket arms l5 having substantially straight rear ends which are secured by screw bolts 16, or other connectors, to the cross bar l3. Strap clamps I! are disposed astride of the cylinder band tube I 4 and are secured at the ends to the bracket arms I5 by screw bolts 18, or other connectors. The outer ends l9 of the bracket arms are straight and extend horizontally in a plane in front of and above the bottom of the impression cylinder l0.

For mounting the multicolor roller 20, as well as the composition inking roller 2| and the two ink supply rollers 22 on the free ends of the bracket arms, a pair of bearing brackets 23, best shown in Figure 4, is secured to the arms by screw bolts 24 engaged in base plates 25 formed integral with the bearing brackets.

The shaft 26 of the metal second-color roller 20 is journaled at one end in a bearing 21 carried by one of the bearing brackets and the other end of the shaft is elongated and projects through a bearing tube 28. Ball bearings 29 and ball bearings 30 in respectively the bearing 21 and tubular bearing 28 mount the shaft for antifrictional rotation.

The projecting end of the multicolor cylinder shaft 26 is equipped with a gear 3| which meshes with gear teeth 32 cut on the left end disk 33 of the impression cylinder 10, as best shown in Figures 1, 3 and 4.

The composition inking roller 2| is provided with a shaft 34 which is journaled in bearings 35 carried by the bracket arms 23, as best shown in Figure 4. One end of the shaft extends parallel with the bearing tube 28 and projects through a bearing 36 carried by an upwardly extending arm 37 which projects from the bearing tube 28. Ball bearings 38 are disposed in the bearings 35 and 36 and mount the shaft for antifrictional rotation in the bearings. A pinion 39 is secured to the projecting end of the shaft and meshes with the gear 3|.

The ink supply rollers 22 are provided with respective shafts 40, best shown in Figure 3. Each shaft is journaled at each end eccentrically in a disk bearing 4| which in turn is adjustably mounted in a bearing 42 through the medium of a set screw 43 and is provided with a head 44 which engages the outer face of the respective bearing bracket 23. The bearings 4| may be turned in the bearings 42 to move the ink supply rollers toward or away from the inking roller and thus vary the pressure of the supply rollers against the inking roller which latter through the medium of this frictional engagement turns both supply rollers.

A second-color plate 45, best shown in Figures 2 and 4, is secured to the second-color roller 20 and is provided with a second-color 46. The

plate may be formed of rubber and may be adhesively secured to the multicolor cylinder.

In operation the second-color roller is driven in the direction of the arrowhead shown in Figure 2 by the gear teeth on the end of the impression roller, the latter being driven in the direction of the arrowhead, also shown in Figure 2. The second-color plate is so located on the secondcolor cylinder that when the printing of the letter on the sheet 41 is completed, the inked second-color plates will arrive at a predetermined location of the letter, although by way of example it is shown as arriving at the bottom of the letter, and the inked second-color will be impressed thereupon prior to the paper sheet being released from the impression cylinder in the usual manner. The ink supplied to the inking roller is of different colors than the ink used in printing the letter.

From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation.

What is claimed is:

1. In a vertical printing press including a frame having a lower cross bar, an impression cylinder mounted for rotary and vertical reciprocatory movement on the frame adapted to carry paper upon which printing is to be performed, and a cylinder band tube disposed below and spaced from the impression cylinder, the combination of a multicolor attachment comprising a pair of arcuate bracket arms secured at the rear ends to said lower cross bar, strap clamps securing the bracket arms intermediate their ends to said cylinder band tube, the outer ends of the arms extending horizontally in a plane in front of and above the bottom of the impression cylinder, a pair of bearing brackets secured to said outer ends of the arms, a secondcolor cylinder rotatably mounted in the bearing brackets, a second-color plate secured to the second-color cylinder, an inking roller rotatably mounted in said bearing brackets adapted to apply ink to the second-color plate, a pair of ink supply rollers journaled in said bearing brackets and frictionally engaging the inking roller, and means for driving the second-color cylinder and the inking roller from said impression cylinder.

2. The structure as in claim 1 and in which said driving means comprises, gear teeth on the impression cylinder, a gear on the second-color cylinder engaging said gear teeth, and a pinion on the inking roller engaging said gear.

PAUL W. BURGAN. 

